312763 has 4 divisors (see below), whose sum is σ = 341208. Its totient is φ = 284320.

The previous prime is 312757. The next prime is 312773. The reversal of 312763 is 367213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 312763 - 2⁹ = 312251 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14206 + ... + 14227.

It is an arithmetic number, because the mean of its divisors is an integer number (85302).

2³¹²⁷⁶³ is an apocalyptic number.

312763 is a deficient number, since it is larger than the sum of its proper divisors (28445).

312763 is a wasteful number, since it uses less digits than its factorization.

312763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28444.

The product of its digits is 756, while the sum is 22.

The square root of 312763 is about 559.2521792537. The cubic root of 312763 is about 67.8794721924.

Adding to 312763 its reverse (367213), we get a palindrome (679976).

The spelling of 312763 in words is "three hundred twelve thousand, seven hundred sixty-three".